Stable Carbon Isotope Fractionation of Polycyclic Aromatic Hydrocarbons During the Sample Preparation Process
详细信息
- 责任者：Jiao Xingchun (Key Laboratory of Eco-Geochemistry ; National Research Center for Geoanalysis ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Guang
- 刊名：Rock and Mineral Analysis
- 出版年：2010
- 卷期：29(3)
- 关键词：多环芳烃 ; polycyclic aromatic hydrocarbons ; 碳—13 ; C-13 ; 质谱法 ; mass spectrometry ; 气相色谱法 ; gas chromatography ; 同位素分馏作用 ; isotope fractionation
- 页码：p.207-211
- 图表：5 illus., 1 table, 7 refs.
- 分类号：0900
- issnNo：ISSN0254-5357
- isbnNo：CN11-2131/TD
摘要
///Stability and accuracy for determination of δ13C of polycyclic aromatic hydrocarbons（PAHs）were tested by gas chromatography-combustion-isotope ratio mass spectrometry（GC-C-IRMS）with continuous and intermittent injection modes. The results showed that the peak area and peak separation degree were the main factors influencing the precision of δ13C data. The fractionation of stable carbon isotopes of PAHs during the sample pretreatment processes was also tested. The cleanup process with gel permeation chromatography (GPC), silica gel column, as well as rotatory evaporation, nitrogen purge and other enrichment process brought no significant isotope fractionation of PAHs. Isotope fractionation in cleanup processes with silica gel column was little larger than with GPC, but still within two standard deviation range of the mean δ13C of PAHs from an unprocessed standard material. And the enrichment processes of rotatory evaporation and nitrogen purge produced a little isotope fractionation for all the measured δ13C of PAHs within 1σ range of the mean δ13C from the unprocessed standard material.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |